Biochemical and genetic aspects of mental retardation.
D005693:Galactosemias; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008052:Lipid Metabolism, Inborn Errors; D008375:Maple Syrup Urine Disease; D008661:Metabolism, Inborn Errors; D010661:Phenylketonurias; D012728:Sex Chromatin / Q000002:abnormalities